Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
  • B65D31/14—Valve bags, i.e. with valves for filling
  • B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
  • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2031/00—Other particular articles
  • B29L2031/712—Containers; Packaging elements or accessories, Packages
  • B29L2031/7128—Bags, sacks, sachets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
  • B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms

Definitions

• the invention relates to a bag for loose material with the features of the preamble of claim 1, a method for producing a bag according to the preamble of claim 13 and an apparatus for producing a bag according to the preamble of claim 17.
• bags made of plastic ribbon fabric, especially polyolefin or polyester ribbon fabric have become established as a popular packaging material.
• a tubular fabric in particular a tubular round fabric, or a flat fabric connected to a tube is used as the starting material for such sacks, wherein sections of the fabric of at least one open end are formed by folding to a sack bottom. Sacks are mostly used to transport loose material
• Ventilzettel formed valves proven, since such a valve automatically closes after filling the bag.
• the valve leaflet is when folding the sack in the
• the present object is achieved by a bag having the features of the characterizing part of claim 1, by a method having the features of the characterizing part of claim 13 and by a device having the features of the characterizing part of claim 17.
• Preferred embodiments of the invention are the subject of the dependent claims.
• the bag according to the invention is formed from a tube material, which is a
• tubular sheet or a sheet material connected to a tube is formed by a fabric, a nonwoven, a film or paper and having a first and a second open end, which are opposite to each other.
• the fabric is formed of woven plastic tapes, such as polyolefin or polyester tapes, etc., and / or natural fibers, such as jute, etc.
• the tubing can be welded.
• Portions of the tube material of at least one of the open ends are formed by folding to a sack bottom, wherein the sack per sack bottom has a first cover sheet, which is designed to reinforce the sack bottom.
• the first cover sheet is connected to the sack bottom and extends in a first region of the sack bottom.
• the first cover sheet can be formed for example by a flat sheet of plastic or paper, nonwoven, a film or a fabric made of plastic and / or natural fiber.
• the bag bottom has a second cover sheet, wherein the second cover sheet extends in a second region of the bag bottom and is thus connected to the bag bottom so that it can be detached from the bag bottom.
• the second cover sheet may be formed, for example, by a flat sheet of plastic or paper, a film, nonwoven or again from a fabric made of plastic and / or natural fiber.
• connection between the second cover sheet and the bag bottom is achieved by welding or gluing the second cover sheet to the tubing of the bag base, wherein the adhesion of the glue or the weld must be selected so that the second cover sheet is detachable from the bag bottom, but Nevertheless, it keeps it sufficiently on the tubing to prevent unintentional and erroneous loosening.
• the first cover sheet is glued or welded to the bag bottom, wherein the adhesion of the adhesive or the weld must be so large that a release of the first cover sheet is reliably prevented.
• a material of the second topsheet is different from a material of the first topsheet and / or the tubing of the bag.
• the second cover sheet is detachable and the first cover sheet is not detachable from the tubing of the bag. But there is also the possibility that the first cover sheet, the second cover sheet and the tubing of the bag are formed of the same material.
• the bag bottom holds together only by the cover sheets applied to the bag bottom.
• the second cover sheet is achieved according to the invention of the bag bottom, whereby in the second region an opening in the bag bottom can be pulled apart and thus material can be removed from the bag.
• the inventive design of the bag has the advantage that a size of the opening is variable by a variation of the size of the first and the second region or the first and second cover sheet.
• a size of the opening is variable by a variation of the size of the first and the second region or the first and second cover sheet.
• the size or Extension of the second cover sheet chosen larger than a sack for grasping coffee beans or gravel.
• the sections of the tube material folded toward the bottom of the bag preferably have at least two tabs which overlap one another at least in sections, abut one another and are held in position by the first and second cover sheets.
• the tabs of the bag bottom are not or not substantially interconnected.
• the sections can be adhered to each other by means of, for example, adhesive dots for easier folding of the bottom of the bag.
• the tabs in the second region are expandable to an opening, whereby the loose material from the bag can be discharged.
• the first and the second cover sheet are formed substantially rectangular at a cross bottom as the bottom of the bag.
• the area of the bag bottom reinforced by the first cover sheet is designed as a handle for holding the bag by making the area between the tabs accessible for access.
• Elements is manageable and a dosage when dispensing loose material from the bag is better controlled.
• the sack held on the handle formed by the first cover sheet with one hand and held in a loop with the other hand.
• the first area and the second area of the bottom of the bag overlap, wherein the second cover sheet, in particular, loosely overlays the first cover sheet.
• the advantage is obtained that leakage of material is reliably prevented by gaps or cracks between the cover sheets.
• Sack bottom formed by folding substantially through the tabs and by two Triangular areas, which are each formed longitudinally opposite to the bottom surface and have substantially the shape of a triangle.
• the second cover sheet is detached from the overlaid area of the cover sheets, starting in the longitudinal direction of the bottom surface of the bag bottom. Although at the beginning of the detachment, a higher force is required, but it is fraying or tearing or tearing off the edges in the
• a region of the second cover sheet overlapping the first cover sheet is designed as a holding element for removing the second cover sheet.
• a grammage of the second cover sheet differs from a grammage of the tube material and / or the first cover sheet.
• the grammage of the second topsheet is higher than a grammage of the tubing and / or the first topsheet. Due to the higher grammage, the second cover sheet has a higher rigidity than the hose material and / or the first cover sheet.
• a ribbon density of the fabric of the second topsheet is different from the ribbon density of the fabric of the tubing of the sack and / or the first topsheet.
• the ribbon density of the fabric of the second topsheet is higher than a ribbon density of the fabric of the fabric
• Tuft density increases the stiffness of the second topsheet. Due to the higher stiffness of the second cover sheet, a force acting on the hose material of the bag is distributed better over the width of the bag base during the detachment of the second cover sheet. This has the consequence that upon detachment of the second cover sheet, a force acting on each portion of the bag bottom is reduced and that the second cover sheet is easier and more uniformly peelable / peelable from the bag bottom. This is particularly advantageous in the case of a tube material formed by a tissue, since it can come from the bottom of the sack when too high forces acting on portions of the sack bottom to pull out ribbons. By acting on the ribbon low force tearing out of individual bands and fraying edges of the tabs when detaching the second cover sheet is reliably prevented by the tissue.
• the process according to the invention for producing a loose material bag according to the invention comprises the following steps:
• an inventive bag with the features mentioned above can be produced.
• the method can be carried out either manually or automatically by means of the device according to the invention.
• the inventive device for producing a bag according to the invention from a tube material formed by a tubular fabric or a flat material connected to a tube comprises a conveyor for transporting the tubing in the conveying direction, wherein the tubing of the bag with the open ends transversely to the conveying direction on the conveyor rests, at least one bottom folding unit, which folds at least one end of the
• Tubing material is formed into a bag bottom, a first Abdeckblattaufbringiser which is adapted to apply the first cover sheet in the first region of the bag bottom, and a second Abdeckblattaufbringiser which is adapted to apply the second cover sheet in the second region of the bag bottom.
• the bottom folding unit is advantageously formed by a pulling-apart unit and a folding unit, which can be designed as a unit, but can also be designed separately from one another.
• a technical construction of the pulling-apart unit, the folding unit and the cover sheet application unit will not be described in detail here, since this is well known. See, for example, EP 2 441 574 Bl and EP 2 711 164 Bl.
• Figure 1 shows a first embodiment of an apparatus for producing a variant of a bag according to the invention in a schematic representation.
• Figures 2 to 5 show the bag according to the invention, which was produced with the device according to Figure 1, in various schematic representations.
• FIG. 6 shows a further embodiment variant of a device for producing a variant of embodiment of a bag according to the invention in a schematic representation.
• FIGS. 7 and 8 each show a sack according to the invention according to FIG. 2 in a schematic view from above with differently shaped second cover sheets.
• FIG. 1 shows a first embodiment of a device 25 for producing a variant of a bag 1 according to the invention in a schematic representation. Furthermore, FIG. 1 shows individual steps A to E, which are carried out by the device 25 for producing the bag 1 according to the invention. The steps A to E are performed on each bag 1.
• the device 25 comprises a conveying device 26 for transporting the sacks 1 in the conveying direction 23, a bottom folding unit (not shown), a valve sheet application unit 4, a first cover sheet application unit 13, a second cover sheet application unit 16 and a third cover sheet application unit 18.
• each bag 1 is formed from a tube material which is a tubular fabric in the form of a circular fabric 6, wherein the circular fabric 6 has a first open end 2 and a second open end 3.
• a tubular round fabric 6 is
• the bag 1 is formed by a flat fabric connected to a tube.
• the flat fabric is advantageously welded to a tube, glued or sewn.
• the round fabric 6 - hereinafter referred to as fabric 6 - lies with the open ends 2 and 3 transversely to the conveying direction 23 on the conveyor 26 on a flat surface.
• the tube material is formed by paper, nonwoven or foil.
• A pulling apart the first open end 2 and the second open end 3 and folding over portions 24 of the fabric 6 to form tabs 7 and 8 by the bottom folding unit;
• Ventilzetteanksburgbringmaschine 4 and folding the tabs 7 and 8 of the first open end 2 to a cross bottom trained first bag bottom 9 through the bottom folding unit, wherein the two tabs 7 and 8 overlap in sections and abut each other and wherein a first bottom surface 28 is formed;
• first cover sheet 10 in a first area 11 of the first sack bottom 9 by the first cover sheet application unit 13, wherein the first cover sheet 10 is advantageously adhesively bonded or welded to the fabric 6 of the first sack bottom 9 by the first cover sheet application unit 13, and folding the Flaps 7 and 8 of the second open end 3 to a second bottom of the bag 12 formed as a cross bottom by the bottom folding unit, wherein the two tabs 7 and 8 overlap in sections and abut each other and wherein a second bottom surface 29 is formed;
• Disengagement units and two folding units is formed, wherein the
• the bottom folding unit is considered as one unit in the above explanation of the individual steps.
• a pulling-apart unit is known, for example, from EP 2 711 164 B1.
• the folding unit is formed, for example, by simple angles, which during transport of the bag 1 on the conveyor 26, the tabs 7 and 8
• FIGS 2 to 5 show the bag 1 according to the invention, which was prepared with the device 25 according to Figure 1, in various representations, the bag 1 has already been attacked on the valve sheet 5 with a loose material 19.
• the bottom surfaces 28 and 29 are each formed by the overlapping tabs 7 and 8 and by two triangular regions 30, which are each formed longitudinally opposite the bottom surfaces 28 and 29 and have substantially the shape of a triangle ,
• the first cover sheet 10 at least partially loosely overlapping area 20 of the second cover sheet 14 is bent, whereby the overlapping region 20 forms a holding element, which is easily accessible and via which the second cover sheet 14 from the fabric 6 through
• Peeling stress can be replaced.
• At least partially loose means in this context that the second cover sheet 14 with the first cover sheet 10 can also be partially glued or welded, but advantageously the second cover sheet 14 is completely loose on the first cover sheet 10.
• the overlapping region 20 can optionally have a contour cut 31 or 32, as a result of which the overlapping region 20 is designed to be particularly ergonomic and thus even easier to grasp. See figures 7 and 8.
• the tabs 7 and 8 are pulled apart in the second region 15 to an opening 21.
• the bag 1 can be positioned by gripping in the area between the tabs 7 and 8 and holding the first cover sheet 10 so that the loose material 19 from the bag 1 through the opening 21st can be dissipated.
• the opening 21 is pulled apart by a necessary for removing loose material 19 from the bag 1 repositioning the bag 1 by gravity due to the loose material 19 itself.
• a slicing of the bag 1 for removing loose material 19 is in the
• Sack 1 according to the invention is not necessary.
• FIG. 6 shows a further embodiment variant of a device 27 for producing a variant of embodiment of a bag 22 according to the invention in a schematic representation.
• Elements and parts of the device 27 which are the same as or similar to elements and parts of the device 25 according to FIG. 1 are given the same reference numerals.
• Elements, parts and regions of the bag 22 that are the same as or similar to elements, parts and regions of the bag 1 according to FIGS. 1 to 5 are given the same reference numerals.
• the bag 22 according to the invention differs from the bag 1 according to the invention only in that in the bag 22 according to the invention the valve leaflet 5 is introduced into the first bag bottom 9. Furthermore, the production of the bag 22 differs from the production of the bag 1 in that in the production of the bag 22, the third cover sheet 17 is applied to the second bag bottom 12 before the second cover sheet 14 is applied to the first bag bottom 9. As a result, in the device 27, the third
• Cover sheet application unit 18 arranged in the conveying direction 23 in front of the second cover sheet application unit 16.
• FIGS. 7 and 8 show a sack 1 according to the invention according to FIG.
• the second cover sheet 14a has a round contour cut 31 at two ends, thereby lengthening the overlapping region 20 and this is thus more tangible.
• the second cover sheet l4b has instead of a round contour section 31 a
• a length L of the overlapping region 20 is selected so that the overlapping region 20 is easily accessible. Accordingly, the length L depending on the contour section 31 or 32 can be chosen differently.
• first region 11 and the second region 12 in the manufacture of the bag 1 or the bag 22 may also be reversed, whereby the first cover sheet 10 closer to a front in the conveying direction 23 edge 33 of Sacks 1, 22 and the second cover sheet 14 closer to a rear in the conveying direction 23 edge 34 of the bag 1, 22 is applied.

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Citations (6)

Family Cites Families (16)

• 2017
  • 2017-12-14 HU HUE17207216A patent/HUE051912T2/hu unknown
  • 2017-12-14 PL PL17207216T patent/PL3498624T3/pl unknown
  • 2017-12-14 EP EP17207216.7A patent/EP3498624B1/de active Active
  • 2017-12-14 ES ES17207216T patent/ES2839598T3/es active Active
  • 2017-12-14 RS RS20201389A patent/RS61076B1/sr unknown
• 2018
  • 2018-11-12 WO PCT/EP2018/080923 patent/WO2019115105A1/de active Application Filing
  • 2018-11-12 JP JP2020531975A patent/JP7366021B2/ja active Active
  • 2018-11-12 US US16/767,660 patent/US11524815B2/en active Active
  • 2018-11-12 RU RU2020119387A patent/RU2769355C2/ru active
  • 2018-11-12 BR BR112020010644-5A patent/BR112020010644B1/pt active IP Right Grant
  • 2018-11-12 CN CN201880080878.7A patent/CN111511650A/zh active Pending
  • 2018-11-12 MX MX2020005207A patent/MX2020005207A/es unknown
  • 2018-12-06 TW TW107143888A patent/TWI793222B/zh active
  • 2018-12-13 AR ARP180103637A patent/AR113701A1/es active IP Right Grant
• 2020
  • 2020-05-21 ZA ZA2020/03003A patent/ZA202003003B/en unknown
  • 2020-06-10 SA SA520412167A patent/SA520412167B1/ar unknown

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